Intrinsic Camera Calibration Based on Radical Center Estimation

Camera calibration is an important step in obtaining 3D information from 2D images. Generally camera parameters can be obtained by using traditional methods if a calibration object or measurements of enough 3D points in the scene are available. However, such measurements are not always available or even desirable. Therefore, many self-calibration methods (methods without calibration object) have been proposed. Vanishing points of parallel lines have proven to be useful features for this task. Most tasks using vanishing points estimate parameters using three orthogonal vanishing points (OVPs). However, in a real scene it is hard to find views that capture a scene including three OVPs. Fortunately, in many such cases the vertical and horizontal vanishing points can still be known. In the case of task using two OVPs, the principal point is assumed the center of the image [8]. Accordingly, the current paper proposes a simple, geometrically intuitive method to calibrate a camera using two o...

• Type: Conference
• Year: 2004
• Where: CISST
• Authors: Dong Hoon Lee, Kyung Ho Jang, Soon Ki Jung
• Keywords: Calibration Object, CISST 2004, Hardware, Orthogonal Vanishing Points, Vanishing Point